/*
 * Copyright 2015 Pivotal Software, Inc..
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.joomtu.smarterlife.validations;

import org.apache.commons.beanutils.BeanUtils;
import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import java.lang.reflect.InvocationTargetException;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author huguobing
 */
public class MatchesValidator implements ConstraintValidator<Matches, Object> {

    private String field;
    private String verifyField;

    @Override
    public void initialize(Matches matches) {
        this.field = matches.field();
        this.verifyField = matches.verifyField();
    }

    @Override
    public boolean isValid(Object value, ConstraintValidatorContext context) {
        try {
            String fieldValue = BeanUtils.getProperty(value, field);
            String verifyFieldValue = BeanUtils.getProperty(value, verifyField);
            boolean valid = (fieldValue == null) && (verifyFieldValue == null);
            if (valid) {
                return true;
            }
            boolean match = (fieldValue != null) && fieldValue.equals(verifyFieldValue);
            if (!match) {
                String messageTemplate = context.getDefaultConstraintMessageTemplate();
                context.disableDefaultConstraintViolation();
                context.buildConstraintViolationWithTemplate(messageTemplate)
                        .addPropertyNode(verifyField)
                        .addConstraintViolation();
            }
            return match;
        } catch (IllegalAccessException | InvocationTargetException | NoSuchMethodException ex) {
            Logger.getLogger(MatchesValidator.class.getName()).log(Level.SEVERE, null, ex);
        }
        return true;
    }
}
